__NOTOC__ Medium may refer to:

General

• Recording medium, a physical material that holds recorded information
• Medium (spirituality), a person who claims to serve as a spiritual intermediary
• Medium of instruction, the language or other tools used to educate, train, or instruct
• Medium of exchange, a monetary instrument used to pay for goods and/or services

Science

• Processing medium, in industrial engineering, a material that plays a role in manufacturing processes
• Transmission medium, in physics, any material substance which can propagate waves or energy
• Medium (optics), material through which waves propagate
• Excitable medium, a nonlinear dynamic system which has the capacity to propagate a wave
• Growth medium, in biotechnology, an object in which microorganisms or cells in experience growth
• Interplanetary medium, in astronomy, material which fills the solar system
• Interstellar medium, in astronomy, the matter and energy content that exists between the stars within a galaxy
• Medium voice (or "middle voice") in linguistics,a grammatical voice in some languages

Cooking

• A degree of doneness in cooking meat; see temperature (meat)

Dramatic works

• The Medium, an opera by Gian-Carlo Menotti
• Medium (TV series), a television series about a research medium for a district attorney's office

See also

• Media (disambiguation)

Medium | Medium | Médium | Medium | メディア (媒体) | Medium | Medium | Medium | 載體